Suspension hanger for tube frames



June 7, 1932. E. F. HATHAWAY ET AL 1,861,856 SUSPENSION HANGER FOR TUBE FRAMES Filed Aug. 15, 1950 N J71 0677527719 i '5 Patented June 7, 1932 UNITED STATES PATENT OFFICE EDGAR F. HATHAWA'Y, F WELLESLEY, AND WALTER IBIXBY, OF BOSTON, MASSACHUSETTS SUSPENSION HANGER FOR TUBE FRAMES Application filed August 13, 1930. Serial No. 475,019.

This invention relates to tube frames and more particularly concerns the suspension means by which the tube frames for Axminster looms are suspended on the carrier chains which lead the tube frames to and from transfer position in the loom.

The present invention is in the nature of an improvement on the construction of suspension hanger disclosed in Patent No.

0 1,631,092 dated May 31, 1927. In that case the suspension hanger was provided with a movable latch or detent arranged to normally remain in retaining position overhanging the end of the spool journal, which was rotatably supported in the spool bearing bracket. According to thepresent invention the movable journal retaining latch is constructed to form an improved bearing member for the spool journal itself and is provided with a tubular bearing bushing of brass or other suitable metal and is formed with upper and lower guiding bosses to preserve accurate ahgnment of the bearing latch as it moves between the chain engaging hook latch and the rigid upright, which forms a guide for the bearing latch instead of as heretofore a bearing member for the spool journal.

tion of a tube frame showing the carrier bar, yarn spool and suspension bracket in proper assembled relation.

Fig. is an end elevation of the same. Fig. 3 is a front elevation in central vertical section on the plane 3-3 of Fig. 2.

Fig. 4 is a cross sectional view on the plane 1-4 of Fig. 3.

Fig. 5 is a detail view on sectional plane 5-5 of Fig. 3 showing the form of the angle foot member 4 of the bracket. 1

According to the practice of the invention as illustrated in the drawing, the hollow end o of the. carrier bar 1 receives an angle bracket Fig.1 is a front elevation of an end por-- chain-penetrating I 3, whose horizontal foot is firmly secured to the upper wall of the carrier bar after being inserted therein leaving the upright portion extending up beyond the level of the spool axis. An angle bracket 4: is provided with a horizontal foot 1* which isinserted against the bottom wall of the carrier bar 1, to which it is secured by fastening screws 5. The angle bracket 4:, at its upper end, is offset and provided with an upwardly projecting chainpenetrating extension 43, whichis interiorly cut away to provide a slot or recess 1 for the movement of the chain hook 6.

As tube frames having a chain-penetrating blade with an integral foot have been constructed much trouble has been occasioned by the wear of the transfer clutch against the thin end of the bottom wall of the carrier tube which, because of its extreme thinness andbeing made of soft metal, speedily wears to a sharp very thin edge, therebynot only weakening'the carrier bar at this point adjacent to the attaching screw, but also leaving a knife-like edge which may cut the hands of the operator in handling the tube frame.

To avoid this difficulty the chain blade member is made somewhat wider than the inside width of the carrier bar and has its foot 4: punched out to leave prongs or ears 1 projecting downward in the vertical plane and forming both a stop abutting against the end edge of the bottom wall of the carrier bar and forming protective extensions or prongs over lapping the end edge of the bottom wall to receive the thrust and wear of the transfer clutch, which rides against this corner. That portion of the attaching foot member 4? beyond the point where the prongs 4? diverge from the foot may be made wider to telescope snugly inside the front and back walls of the carrier bar.

The hook latch 6 is formed at its lower end with a hook-like portion 6 adapted to receive a retaining pin 6 after the hook has been inserted through the lower portion of the slot 49in the chain blade member. This slot 4 extends from the offset portion of the chain blade member 4 sufficiently below the foot 3 of the bracket 3 to readily admit the hook or loop portion 6 of the hook latch,

so that the upper exterior surface of the hook portion 6 fulcrums against the convex or exterior angle of the bracket 3. The retaining pin 6 acts not as a fulcral member in this case, but merely as a means for retaining the chain hook from falling out of the tube frame structure. As the stress or strain on the suspension hook is in an upward direction, this construction provides a wide fulcral bearing surface between the exterior angle of the bracket 8 and the upper loop or hook portion of the hook latch 6, both of which membersare of substantial construction so that the retaining pin 6 is no longer subjectzto excessive wear which in time would result in the breaking of the pin and the dropping of the tube frame into the loom with destructive consequences.

The upper end of bracket 3-is provided with a keyhole slot 3 open at the top to allow the adjacent spool journal 2 to drop intobearing position. The bearing provided for this journal, however, is a tubular bearing embracing a bushing or sleeve 7 forced into a punched-out and offset annular flange 7 formed in the bearing latch or keeper 7 This bearing latch or keeper has an additional ofi'- set or struck-out boss 7 near its lower end, which seats inside a circular opening 3 in the bracket 3 so that the spool bearing and retaining latch 7 has an upper guide 7" and a lower guide 7 engaging corresponding apertures in the fixed bracket 3. A compression spring 8, seated in the hollow or recess formed by the oifset member 7 c and thrusting against the chain latch 6, serves to-keep both the chain latch and the spool bearing member in their proper operative positions to support respectively the tube frame and the spool journal.

It will therefore be seen that the suspension bracket comprises two rigid angle members 3 and 4, one lapped against the other and I spotwelded together as indicated at 9 to form, in effect, an integral rigid construction in which are fulorumed two pivotal members, namely, a chain latch 6 and a journal bearing latch and keeper 7 normally pressed in opposite directions to yieldingly maintain them in their respective operative positions. The extreme upper end of the bearing or keeper member 7 is formed with a short channel which acts as a cam when engaged by the end of the spool journal being inserted in the bearing to open the latch. It will be noticed that while the spool journal is supported in a complete circular bearing member, which may be made of antifriction metal, it is posi-- tioned so as to be readily opened for removal or for insertion of a spool journal, and that although this spool bearing latch has freedom of movement'for its purpose, it is never-' theless kept in precisely the right position by its upper and lower guiding engagement with the rigid portion of the suspension hanger.

The chain latch 6 is provided with an aperture 6 allowing it to swing toward the spool without interference with the projecting spool journal 2% What we claim is:

1. A suspension hanger for a tube frame embracing in its construction, a rigid chainblade bracket having at its lower end an integral attaching foot dimensioned for insertion into the end of a tube frame carrier bar and being provided with external integral lugs arranged to abut against and overlap the endedge of the lower wall of the carrier bar, an angular spool bracket integrally secured tosaidchain-blade bracket having an angle foot adapted to telescope inside the carrier bar, means for fastening said angle feet to the lower and upper walls of the carby said" brackets affording releasable chainengaging suspension means, and journal bearing and retaining means for the yarn spool of a tube frame.

2. In a suspension bracket for a tube frame, a chain-blade penetrating member having an integral angle foot dimensioned to lie inserted inside the hollow end, of a tube frame carrier bar to whose bottom wall said angle foot is detachably secured, external guard means projecting downward from said bracket to overlap and protect the end edge of the lower wall of the carrier bar, and a spool member integrally united with said chain-penetrating element and having an integral angle foot secured to the upper wall of said carrier bar, and means coacting with said members for releasably suspending the bracket from a carrier chain and for engaging and retaining the journal'of a yarn spool.

3. In a suspension device for a tube frame, the combination of'asuspending bracket secured at its lower end to a tube frame carrier bar and comprising an outer chain-penetrating member and an inner spool member integrally united together, a chain-engaging suspension latch carried by said bracket, a spool bearing and locking member fulcrally mounted on said bracket between said hook and said spool member, said spool bearing and locking member being formed with a bearing perforation surrounded by an annular flange, and a journal supporting bearing ing arms, said brackets being provided at their lower ends with spaced parallel angle feet adapted to telescope between the top and bottom walls of a tube frame carrier bar to which they are respectively secured, the outer bracket being provided. with integral lugs extending beyond its angle foot and overlapping the end edge of the bottom wall of the carrier bar to receive the thrust and wear of the tube frame transfer device.

5. A chain-penetrating blade for a tube frame suspension hanger embracing, a rigid bracket whosemedial portion is slotted and lies in a plane transverse to the carrier bar of the tube frame, the upper portion of said bracket being outwardly offset and upwardly extended to penetrate a carrier chain, the lower portion thereof being bent inwardly to form an attaching foot dimensioned to be inserted inside the tube frame carrier bar for attachment to said bar, said medial portion having downwardly projecting integral lugs overlapping and abutting the end edge of the bottom wall of the carrier bar.

6. A spool bearing member for the suspen sion hanger of a tube frame embracing, a pressed metal arm having formed in its lower end an offset concavo-convex portion forming a seat for an actuator spring, the convex side of said ofiset forming a positioning guide adapted to seat into an adjacent aperture in said hanger, said arm being apertured near its upper end and provided with an inwardly projecting annular bearing flange arranged to have guiding engagement with a guide aperture in said hanger, whereby the bearing member is correctly positioned for engaging and supporting the spool journal while permitting the ready removal of the spool journal.

In witness whereof, we have subscribed the above specification.

EDGAR F. HATHAWAY. WALTER BIXBY. 

